Search for dissertations about: "seasonal affective disorder"

Showing result 1 - 5 of 7 swedish dissertations containing the words seasonal affective disorder.

2. 1. Genetic and experimental studies of seasonal affective disorder and related phenotypes

   Author : Carolina Johansson; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Seasonal affective disorder (SAD) is a subtype of recurrent depressive or bipolar disorder, in which episodes reoccur and remit during a particular season each year. A genetic component in vulnerability to winter SAD has been suggested, and the goal of this thesis was to increase the understanding of SAD and seasonal variations in mood, by obtaining self-report assessments of related traits, examining genetic variations in genes hypothesised to influence the phenotypes in question, and to investigate effects of different photoperiods and stress in an animal model. READ MORE

4. 2. Lighting, Mood, and Seasonal Fatigue in Northern Argentina. Comparison to Countries Close to and Further from the Equator

   Author : Graciela Tonello; Institutionen för arkitektur och byggd miljö; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Environmental technology; temperature.; seasonal affective disorder; sadness; personality; mood; light; latitude; indoor lighting; chronobiology; circadian rhythms; pollution control; Miljöteknik; kontroll av utsläpp; Psychology; Psykologi;

   Abstract : The main problems in this thesis concern the impact of seasonal variations in daylight and ambient temperature on people's mood and the prevalence of various symptoms related to seasonal affective disorder. Questions are also raised about the role of the indoor environment and of the individual's personality as moderators of such an impact. READ MORE

5. 3. Platelet serotonin function and personality traits in affective disorder

   Author : Jolanta Neuger; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Serotonin; depression; panic disorder; platelets; personality; citalopram;

   Abstract : Serotonin (5-HT, 5-hydroxytryptamine) is a neurotransmitter in the central nervous system which has been implicated m the aetiology and pathogenesis of affective disorders like depression and anxiety disorders. The serotonergic system has been shown to be involved in the modulation of mood, sleep, appetite, libido, energy and cognition and memory functions. READ MORE

6. 4. Light treatment in seasonal and nonseasonal depression : diagnostic, clinical and neurendocrine studies

   Author : Björn-Erik Thalén; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Depression; seasonal; nonseasonal; light treatment; clinical ratings; melatonin; cortisol; ACTH; CRH; dexamethasone suppression testBj rn-Erik Thalen; 1996Printed in Sweden by Repro Print; Stockholm.;

   Abstract : There is a need for evaluation of new treatment modalities in depression. The aims of this thesis were to investigate the effect of 2 hours of daily light treatment for 10 days in patients with a major depression with seasonal or nonseasonal pattern and to study subgroups of depressed patients with respect to clinical, demographic, and neuroendocrine factors, the effect of exposure to bright light, dexamethasone suppression test, CRH stimulation and the hormonal effect of light exposure on healthy controls. READ MORE

7. 5. Gene-environment factors in depressive disorders with a focus on circadian genes

   Author : Louise Sjöholm; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Depressive disorders have a multifactorial etiology, where both environmental and genetic risk factors contribute. Depression is characterized by a depressed mood and accompanied by e.g. loss of interest and pleasure, disturbed sleep and appetite and difficulties in concentrating. READ MORE